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The BN plecos are pretty easy breeders. I currently have over a dozen 1 month old fry from an albino male and brown female and these are just in a 10 gallon tank at the moment. I haven't had to do anything special for them except that I do water changes and substrate vacs every 3-4 days, and feed either cucumbers or zucchini every day along with algae or veggie wafers.

I'll be visiting my LFS this weekend to see how large they have to get before they will take them. I may also have to set up a larger tank as I suspect the male is now caring for another batch. I saw the female in the cave again about a week ago and I haven't seen the male emerge at all. The angle of the cave doesn't allow me to see in to check for eggs.